Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
180019goodexcellent31excellent
170019goodexcellent31excellent
160018goodexcellent31excellent
150010excellentexcellent21excellent
14007excellentexcellent11excellent
13007excellentexcellent11excellent
12008excellentexcellent11excellent
11007excellentexcellent11excellent
10008excellentexcellent11excellent
09009excellentexcellent11excellent
080018goodexcellent11excellent
07007excellentexcellent11excellent
06007excellentexcellent11excellent
05008excellentexcellent11excellent
04009excellentexcellent11excellent
030013goodexcellent11excellent
020012excellentexcellent11excellent
01006excellentexcellent11excellent
00008excellentexcellent11excellent
23008excellentexcellent11excellent
22005excellentexcellent11excellent
21005excellentexcellent11excellent
20006excellentexcellent11excellent
19004excellentexcellent11excellent